Halfway through a tiling job onto hardibacker tanked with the Mapei Shower Waterproofing kit, we had a change of heart on the tiles and tile pattern.
Cutting a long story short, had to remove tiles after a week, with inevitable damage to hardibacker and tanking. Worryingly, the Mapei tanking peeled off depressingly easy where it was applied over the corner tape. Very low adhesion levels indeed (all applied in strict accord with the instructions). Something you wouldn't ordinarily notice I guess, as the rest of the tile holds on sufficiently strongly so you'd never know, but something I thought I'd mention! You can just peel off the mapegum - doesn't really adhere to the tape at all.
Anyhow, About to make good by replacing 3 Hardibacker boards, and re-tanking where necessary. I need another Mapei waterproofing kit - don't want any weird reactions - anywhere doing this on special? I bought the first batch from Screwfix on special but the price has jumped up by 20%.
Thanks,
Simon
Cutting a long story short, had to remove tiles after a week, with inevitable damage to hardibacker and tanking. Worryingly, the Mapei tanking peeled off depressingly easy where it was applied over the corner tape. Very low adhesion levels indeed (all applied in strict accord with the instructions). Something you wouldn't ordinarily notice I guess, as the rest of the tile holds on sufficiently strongly so you'd never know, but something I thought I'd mention! You can just peel off the mapegum - doesn't really adhere to the tape at all.
Anyhow, About to make good by replacing 3 Hardibacker boards, and re-tanking where necessary. I need another Mapei waterproofing kit - don't want any weird reactions - anywhere doing this on special? I bought the first batch from Screwfix on special but the price has jumped up by 20%.
Thanks,
Simon